CN202942670U - Improved silicon tetrachloride rectifying tower - Google Patents
Improved silicon tetrachloride rectifying tower Download PDFInfo
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- CN202942670U CN202942670U CN 201220543009 CN201220543009U CN202942670U CN 202942670 U CN202942670 U CN 202942670U CN 201220543009 CN201220543009 CN 201220543009 CN 201220543009 U CN201220543009 U CN 201220543009U CN 202942670 U CN202942670 U CN 202942670U
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Abstract
The utility model provides an improved silicon tetrachloride rectifying tower, and belongs to the technical field of rectifying tower equipment for chemical industry production. The improved silicon tetrachloride rectifying tower is used for increasing the rectification purity of silicon tetrachloride. The technical scheme is as follows: a filler pressing plate, a filler and a filler bearing plate are arranged in a tower shell, the filler pressing plate is horizontally arranged below a liquid distributor, the filler is filled under the filler pressing plate, the filler bearing plate is arranged under the filler to support the filler, and the filler is a waved steel wire filler. According to the improved silicon tetrachloride rectifying tower, an original tower plate is replaced by the waved steel wire filler, the production capacity of a filler tower usually is higher than that of a plate-type tower, and because the material in a separation process belongs to normal-pressure operation, so the separation efficiency of the filler tower is obviously lower than that of the plate-type tower, and the mass transfer efficiency is increased; besides, the pressure drop of the filler tower is lower than that of the plate-type tower, so not only the operation cost and the energy consumption are reduced, but also the temperature at the tower bottom is reduced, and the separation of heat-sensitive substances is benefited. Thus, the improved silicon tetrachloride rectifying tower greatly increases the rectification purity of the silicon tetrachloride and makes a great contribution to improvement of the quality of the silicon tetrachloride.
Description
Technical field
The utility model relates to a kind of silicon tetrachloride rectifier unit that generally uses in the trichlorosilane industry, belong to the rectifying column equipment technical field of Chemical Manufacture.
Background technology
Rise development along with the polysilicon industry, make as the trichlorosilane industry of producing the polysilicon primary raw material and also grow stronger day by day, but the quality that how to improve in process of production silicon tetrachloride also becomes each producer's problems of concern, and wherein rectifying is the important step that improves the silicon tetrachloride quality.Rectifying is to separate the classical unit operations of mutually soluble liquids mixture in Chemical Manufacture, its essence is multistage distillation, namely under certain pressure, utilize boiling point or the saturated vapour pressure of each component of mutually soluble liquids mixture different, make light component (component that boiling point is lower or saturated vapor pressure is higher) vaporization, through the gasification of Partial Liquid Phase repeatedly and part vapor condensation, light component in gas phase and the heavy constituent concentration in liquid phase are raise gradually, thereby realize separation.rectifying adopts rectifying column to carry out, rectifying column is take feed zone as the boundary, top is rectifying section, the bottom is stripping section, after the feed liquid of uniform temperature and pressure enters rectifying column, light component is concentrated gradually at rectifying section, after leaving tower top, whole condensations enter return tank, a part is as overhead product, another part is admitted in tower as phegma, the purpose of phegma is that the light component that replenishes in tower makes the liquid composition in tower keep stable, guarantee the carrying out of distillation operation continous-stable, and heavy constituent concentrated in stripping section after, a part is as the tower reactor product, a part is sent back in tower after the reboiler heating, the vapor stream of a certain amount of continuous rising is provided for distillation operation.What adopted the silicon tetrachloride rectifying column of use inside at present is sieve-plate structure, and there is the shortcoming that silicon tetrachloride rectifying purity is not ideal enough, energy consumption is higher, operating cost is higher in this structure, and improved necessity is arranged.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of improved silicon tetrachloride rectifying column, and this rectifying column can improve silicon tetrachloride rectifying purity, fundamentally solves the silicon tetrachloride quality problems, creates greatest benefit.
The technical scheme that solves the problems of the technologies described above is:
A kind of improved silicon tetrachloride rectifying column, it has tower shell, liquid distribution trough, liquid distribution trough is connected with input duct, its improvements are, hold-down grid, filler, supporting plate are installed in tower shell, the hold-down grid level is arranged on the below of liquid distribution trough, is filled with filler below hold-down grid, and the below of filler has supporting plate that filler is supported.
Above-mentioned improved silicon tetrachloride rectifying column, two groups of hold-down grids, filler, supporting plate are arranged in described tower shell, first group of hold-down grid, filler, supporting plate are positioned at the below of liquid distribution trough, below first group of supporting plate, liquid redistribution device is arranged, second group of hold-down grid, filler, supporting plate are arranged below liquid redistribution device, and admission line and fluid pipeline are positioned at the below of second group of supporting plate.
Above-mentioned improved silicon tetrachloride rectifying column, for closely to be connected, filler is steel wire ripple type filler with the tower shell inwall for described hold-down grid, supporting plate periphery.
The beneficial effects of the utility model are:
The utility model is in the situation that original tower body is constant, its inner original column plate is removed be replaced by steel wire ripple type filler, the filler output of column is general all higher than plate column, belong to atmospheric operation in separation process due to material, the separative efficiency of packed tower is starkly lower than plate column, improves mass-transfer efficiency.Simultaneously, the pressure drop of packed tower not only reduces operating cost, energy efficient lower than plate column, and the tower reactor temperature is reduced, and is conducive to the separation of thermal sensitivity system.The utility model changes the internal structure of original rectification process silicon tetrachloride rectifying column, thereby has greatly improved silicon tetrachloride rectifying purity, makes major contribution for improving the silicon tetrachloride quality.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure, mark is as follows: tower shell 1, liquid distribution trough 2, hold-down grid 3, filler 4, liquid redistribution device 5, supporting plate 6, outlet pipe 7, input duct 8, admission line 9, fluid pipeline 10.
The specific embodiment
The utility model is rejected original sieve plate under the big or small constant prerequisite of the tower body of original plate column, is replaced by steel wire ripple type filler, changes original technological operation and controls index, and then reach the purpose that improves silicon tetrachloride purity.
Show in figure, the utility model comprises tower shell 1, liquid distribution trough 2, liquid distribution trough 2 is connected with input duct 8, hold-down grid 3, filler 4, supporting plate 6 are installed in tower shell 1, hold-down grid 3 is arranged on the below of liquid distribution trough 2, and hold-down grid 3 belows are filled with filler 4, and the below of filler 4 has 6 pairs of fillers 4 of supporting plate to support, for closely to be connected, filler 4 is steel wire ripple type filler with tower shell 1 inwall for hold-down grid 3, supporting plate 6 peripheries.
Show in figure that two groups of hold-down grids 3, filler 4, supporting plate 6 are arranged in tower shell 1.
First group of hold-down grid 3, filler 4, supporting plate 6 are positioned at the below of liquid distribution trough 2, liquid redistribution device 5 is arranged below first group of supporting plate 6, second group of hold-down grid 3, filler 4, supporting plate 6 are arranged below liquid redistribution device 5, and admission line 9 and fluid pipeline 10 are positioned at the below of second group of supporting plate 6.
The utility model is because the original column plate dismounting in inside is replaced by steel wire ripple type filler 4, the filler output of column is general all higher than plate column, belong to atmospheric operation in separation process due to material, the separative efficiency of packed tower is starkly lower than plate column, improves mass-transfer efficiency.Simultaneously, the pressure drop of packed tower not only reduces operating cost, energy efficient lower than plate column, and the tower reactor temperature is reduced, and is conducive to the separation of thermal sensitivity system.
Claims (3)
1. improved silicon tetrachloride rectifying column, it has tower shell (1), liquid distribution trough (2), liquid distribution trough (2) is connected with input duct (8), it is characterized in that: hold-down grid (3), filler (4), supporting plate (6) are installed in tower shell (1), hold-down grid (3) level is arranged on the below of liquid distribution trough (2), hold-down grid (3) below is filled with filler (4), and the below of filler (4) has supporting plate (6) that filler (4) is supported.
2. improved silicon tetrachloride rectifying column according to claim 1, it is characterized in that: two groups of hold-down grids (3) are arranged in described tower shell (1), filler (4), supporting plate (6), first group of hold-down grid (3), filler (4), supporting plate (6) is positioned at the below of liquid distribution trough (2), in the below of first group of supporting plate (6), liquid redistribution device (5) is arranged, in the below of liquid redistribution device (5), second group of hold-down grid (3) arranged, filler (4), supporting plate (6), admission line (9) and fluid pipeline (10) are positioned at the below of second group of supporting plate (6).
3. improved silicon tetrachloride rectifying column according to claim 1 and 2 is characterized in that: for closely to be connected, filler (4) is steel wire ripple type filler with tower shell (1) inwall for described hold-down grid (3), supporting plate (6) periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220543009 CN202942670U (en) | 2012-10-23 | 2012-10-23 | Improved silicon tetrachloride rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220543009 CN202942670U (en) | 2012-10-23 | 2012-10-23 | Improved silicon tetrachloride rectifying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202942670U true CN202942670U (en) | 2013-05-22 |
Family
ID=48418386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220543009 Expired - Fee Related CN202942670U (en) | 2012-10-23 | 2012-10-23 | Improved silicon tetrachloride rectifying tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202942670U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096373A (en) * | 2014-07-28 | 2014-10-15 | 安徽国孚润滑油工业有限公司 | Distillating tower washing section return oil distributor |
| CN108635896A (en) * | 2018-07-11 | 2018-10-12 | 无锡英罗唯森科技有限公司 | Packed tower barrel structure and stuffing rectification column |
| CN110559980A (en) * | 2019-09-12 | 2019-12-13 | 天津市天屹化工技术开发有限公司 | High-efficient combination filler device |
-
2012
- 2012-10-23 CN CN 201220543009 patent/CN202942670U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096373A (en) * | 2014-07-28 | 2014-10-15 | 安徽国孚润滑油工业有限公司 | Distillating tower washing section return oil distributor |
| CN104096373B (en) * | 2014-07-28 | 2015-08-19 | 安徽国孚润滑油工业有限公司 | Destilling tower washing section withdrawing oil distribution apparatus |
| CN108635896A (en) * | 2018-07-11 | 2018-10-12 | 无锡英罗唯森科技有限公司 | Packed tower barrel structure and stuffing rectification column |
| CN110559980A (en) * | 2019-09-12 | 2019-12-13 | 天津市天屹化工技术开发有限公司 | High-efficient combination filler device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20141023 |
|
| EXPY | Termination of patent right or utility model |